Operator Crawl: Process failed

domo

Hi,
I have installed the lastest version 10.1.001 and I have a problem with the operator Crwal.
The process fail and here the error message.
I have checked the version of Java and the version is 1.8.0_361

• Exception: java.lang.NoClassDefFoundError
• Message: org/apache/tika/parser/html/HtmlParser
• Stack trace:
• edu.uci.ics.crawler4j.parser.TikaHtmlParser.(TikaHtmlParser.java:34)
• edu.uci.ics.crawler4j.parser.Parser.(Parser.java:42)
• edu.uci.ics.crawler4j.crawler.CrawlController.(CrawlController.java:85)
• com.rapidminer.operator.web.crawler.CrawlerOperator.doWork(CrawlerOperator.java:269)
• com.rapidminer.operator.Operator.execute(Operator.java:1024)
• com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:77)
• com.rapidminer.operator.ExecutionUnit$2.run(ExecutionUnit.java:804)
• com.rapidminer.operator.ExecutionUnit$2.run(ExecutionUnit.java:799)
• java.base/java.security.AccessController.doPrivileged(Native Method)
• com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:799)
• com.rapidminer.operator.OperatorChain.doWork(OperatorChain.java:423)
• com.rapidminer.operator.Operator.execute(Operator.java:1024)
• com.rapidminer.Process.executeRoot(Process.java:1476)
• com.rapidminer.Process.lambda$executeRootInPool$5(Process.java:1452)
• com.rapidminer.studio.concurrency.internal.AbstractConcurrencyContext$AdaptedCallable.exec(AbstractConcurrencyContext.java:362)
• java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
• java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
• java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
• java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
• java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

Could you help me to solve the problem?
Thanks

ruhaila

Perhaps share the .rpm file?

gneher

Hi all,

I get exactly the same error message with version 10.2. (works with version 9.x)

May be there is something missing in the Java bundle ??

Any hint is appreciated.

Regards, Günther

The .rpm is as follows:

<?xml version="1.0" encoding="UTF-8"?><process version="10.2.000">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="10.2.000" expanded="true" name="Process">
    <parameter key="logverbosity" value="init"/>
    <parameter key="random_seed" value="2001"/>
    <parameter key="send_mail" value="never"/>
    <parameter key="notification_email" value=""/>
    <parameter key="process_duration_for_mail" value="30"/>
    <parameter key="encoding" value="UTF-8"/>
    <process expanded="true">
      <operator activated="true" class="web:crawl_web_modern" compatibility="10.0.000" expanded="true" height="68" name="Crawl Web" width="90" x="179" y="34">
        <parameter key="url" value="https://osa.fh-potsdam.de"/>
        <list key="crawling_rules"/>
        <parameter key="max_crawl_depth" value="1"/>
        <parameter key="retrieve_as_html" value="true"/>
        <parameter key="enable_basic_auth" value="false"/>
        <parameter key="add_content_as_attribute" value="false"/>
        <parameter key="write_pages_to_disk" value="true"/>
        <parameter key="include_binary_content" value="true"/>
        <parameter key="output_dir" value="E:/_tmp"/>
        <parameter key="output_file_extension" value="html"/>
        <parameter key="max_pages" value="10"/>
        <parameter key="max_page_size" value="1000"/>
        <parameter key="delay" value="200"/>
        <parameter key="max_concurrent_connections" value="100"/>
        <parameter key="max_connections_per_host" value="50"/>
        <parameter key="user_agent" value="rapidminer-web-mining-extension-crawler"/>
        <parameter key="ignore_robot_exclusion" value="false"/>
      </operator>
      <connect from_op="Crawl Web" from_port="example set" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
    </process>
  </operator>
</process>